Where can the command-line for LL's Lite Tweak's tasks be found?

[m654321]

The Lite Tweaks GUI, and the list of tasks listed within it, is a really neat feature of LL.  It's especially useful for everlasting newbies
such as myself (who don't know much command-line) in ensuring the day-to-day smooth running of an LL install.

Is the Lite Tweaks GUI unique to LL? - I can't say I've noticed it in the linux distros I've flirted with to date.

However, I'd now like to learn a bit about the command-line behind at least some of the key tasks listed in Lite Tweaks.
Could someone point me in the direction where I would find the command-line for the following tasks:

- old kernel removal
- free up RAM memory
- firefox cache clean
- package cache clean
- residual configuration files clean
- thumbnail cache clean
- whisker menu clean

Many thanks
Mike